Road grader



F. E. ARNDT AprilV 16, 1940.

RAD GRADER 21, 1935 7 Sheets-Sheet 1 Original Filed Feb A TT'Y.

April 16, 1940.

F. E. ARNDT ROAD GRADER originalriled Feb. 21. 1935 7 Sheets-Sheet 2 y /N VEA/TOR Frank/fh E/NO ATT'Y F. E. ARNDT April 16, 1940 ROAD G RADE R Original Filed Feb. 21, 1955 7 Sheets-Sheet 3 /N VEN TOF?. Frank/fh E Arno/7i |A||nunnnuulhu||ununu I QW F. E. ARNDT ROAD GRADER April 16, 1940.

April 16, 194o. F. E. ARNm 2,197,390

ROAD GRADER Original Filed-Feb. 2l, 1935 7 Sheets-Sheet 5 r /N VEN TOR:

um' J- l April 16, 1940. EARNDT l 2,197,390

ROAD GRADER Origixxall.` Filed Feb. 2l, 1935 7 Sheets-Sheet 6 ATT'Y April 16, 1940. F, E, ARNmv 2,197,390

ROAD GRADER origina-1` Filed Feb. 21, 1955 7 sheets-sheet 7 /N VEN 7'07? ATT'Y Patented Apr. 16, 1940 UNITED STATI-:s

' alsmaar My invention relates to road graders.. and-rinel of its objects is the provision of improved and 4` eiiicient means for adjusting the mold-boardfoflz-f...

a road grader to an upright or apprQi-rimately upright bank-cutting position A'and holding the same in such adjusted position during operation.

A further object of the invention is the pro-1*" vision of mechanism comprising interlocking worm gearing for eiecting the shifting of the rear end of the drawbar laterally relatively to the grader frame.

Another object of the invention is the provision of improved and eiiicient mechanism including enclosed nut and screw elements for operating a scarifier.

Another object of the invention is the ,provision of improved mechanism comprising interlocking Worm gearngconnected to a perforated or self-cleaning rack bar, for shifting the-rear end of the vehicle frame relatively to the rear supporting wheels.

Another object of the invention is the provision of improved mechanism comprising selflocking worm gearing for varying the leaning of the supporting wheels of a road working machine.

Another object of the invention is the provision of improved mechanism, associated with `means for leaning the front Wheels of the roadworking machine, for varying the elevation of the front end of a drawbar.

Another object of the invention is the pro` vision of means for adjusting either a scarier or the leaning of the -front wheels of a roadworking machine.v a

More particularly, .it is the object of the present invention to provide adjustment of the moldboard to a steep bank-cutting position and also adjustment of the leaning of the front wheels and rear wheels so that their rims by digging being set forth in the appended claims.

In the accompanying drawings,

Ohio

ry 21, '1935, serial no.' 1.535 @August 1,. maar;V

an; :elevational view embodying my Fig. 2f`is an enlarged plan view partly in section -oiffthe` gearing for adjusting either the scariiier'. or the leaning of the front wheels;

v Figs. 3 and 4. placed end to end, show an enlargedelevational view of the machine shown in Fig; l.;

` Fig. 5 is a sectional elevation on the line 5 5 of Fig. 3, looking forwardly in the direction of i@ the arrows;

Fig. 5B is a sectional elevational view taken on the line 51-58 of Fig. 3, showing the relation between the mechanism for adjusting the front end of the drawbar and the means for effecting 15 adjustment of the leaning of the front wheels;

Figs. 6 and 7, placed end to end, show a plan view of the machine shown in elevation in Figs.

3 and 4 when placed end to end;

Fig. 8 is an enlarged .plan view of justable connections between the rear endA of the drawbar and the laterally, shifting mechanism comprising the rack gearing shown in Fig. i

I Fig. 9 is an enlarged view of the self-locking 25.

worm gearing connected to the rack gearing for eifecting lateral shifting of the rear end of the.

drawbar;

Fig. 10 is a side elevational View of the machine showing the mold-board in high lift or 30 steep bank-cutting position;

Fig. 11 is an enlarged longitudinal sectional View of one` of the extensible hangers; and

Fig. 12 is a `rear elevational view of the machine shown in Fig. 10.

' As shown in Fig. 1, the main supporting frame I4 is upwardly arched and is supported at its rear end on the -Wheels I5 and at its front end on the wheels I6. Q'I'he frame I4 is shown in Figs. 6 and 7 as comprising spaced-apart longio y tudinal side beams connected by the tubular cross-braces Il, I8, I9 and I9. It should be particularly noted by referring to Fig. 10 that the front and rear wheels are preferably of metal. so that the rims thereof will be suiciently thin to be able to'l dig into the road surface when the wheels are leaned in such direction as to resist lateral skidding when the mold-board is in a steep bank-cutting position as shown in Figs. 10 and 12 and under. operation by move- '50 ment of the whole machine Valong the roadway, as will be more fully explained hereinafter.

The-machine shown in the accompanying drawings includes mechanism for the steering 'of the front wheels.' the leaning ofthe front '55 the ad- 20 wheels and the rear wheels, the shifting of the rear end of the main frame 'laterally relatively to the rear wheels, the shifting of the moldboard laterally and movement thereof ltov banksloping position, the adjustment of the scarifler, and the variation in elevation of the front end of the drawbar. All of the controls extend to the single operators station or platform 28 at the rear end of the machine, as shown in Figs. 14, 7, 10 and 12. Although I have shown in the accompanying drawings a pull type of road-working machine comprising a tongue 2|, to the front end of which is adapted to be connected a pulling tractor, it should be understood that my improvements hereinafter described are also useful in a power grader comprising a power plant connected to rear traction means for moving the entire machine along the roadway.

The front wheel steering mechanism comprises a driving pinion meshing with the chain 22, the ends of which are connected by means= of the links 23 and 24 to.the brackets l25, 28 attached to the front axle frame 21. The tongue 2| is pivotally connected to th'e axle 21 midway between the ends of the latter. When -the wheel-28 at,-

the rear end of the machine, as shown in Fig. 1,

is rotated, the shaft 29 will transmit rotary mo-w 2| in one direction or the other relatively to the front wheels.` A counterbalancing spring 36 is connected to the tongue 2| intermediate its ends and also to an inverted V-shaped cross-piece. 31,

as shown in Figs. 3 and 5.

In order to eiect'adjustment of the leaning of the front wheels I6, the crank 38 is pushed toward the left, 'as viewed in Fig. 2, so that the shaft- 39 will`carry the pinion 48 into mesh lwith the gear 4| mounted in the casing 42.- The gear 4| is connected toa shaft 4|', which is journaledjn The forward end of theY the bearings 43, 44. shaft 4| is connected by means of a universal joint to a shaft 46 which in turn isconn'ected by the universaljoint 41 -at the front end of the machine, to the bevel gearing 48A shown'in dotted lines in Fig. 3 and in elevation in Fig. 5.

horizontal bevel gear is keyed to a vertical shaft' 49,.the lower end of which is connected bymeans of the universal joint 50 to worm gearing 5| in the casing 5|. nected to a pinion 52 which meshes with an arcuate rack 53 rigidly secured to the transverse;

cross-piece 54, the ends of which are pivoted at 55, 58 to the vertical arms 51, 58 of bell cranks comprising axles for the front wheels I5; these bell cranks being pivoted'at 59, 68 t the front axle frame 21. v

` As shown in Fig. l2, when the gear 48 meshes with the gear 4|, a spring latch 3| is adapted to enter the circumferential groove 82 in the shaft 39 to hold the gearsl 48 andA 4| in mesh While the crank 38 is being rotated. In a similar manne'r, the spring latch 6| entering the circumferential groove 63 may berelied on to hold the gears 48 and 84m mesh while the crank 38 is being rotated. When the gear 48 is out of mesh with thegear 4|, the worm gearing 5|, being'. self-locking, may be relied on to-lock the frontA .wheels in adjusted leaning positions. This is particularly desirable when the mold-board isvoperating in steep bank-cutting position so that. the rims of the front wheels will be able to resist the lateral thrust exerted 'on the machine during This'worm gearing 5| is con-.

-in Fig. 2 through a nut 18 secured rigidly to the tube 1| intermediate the ends of -the latter. The f rod 88 fitsin the slide bearing 12 at the rear 10 end of the tube 1|. 'Ihe frontend of the tube 1| maybe partially or entirely closed by its con nection to the clevis 1|'. which is pivoted at. 13 to' the upright arm 14, the lowerend of which .is secured to a transverse shaft 15 intermediate 1 5 the ends of the latter.

The ends ofthe shaft 15 are'jcurnaled in bearings 16 (Fig. 1) mounted-on top-of the beams of the frame |4. To the outer ends of the shaft 15 are secured'the rearwardly extending arms 20 11 at opposite sides of the machine, as shown in Fig. 10. Upright hangers 18, 13 at the-opposite sides of thev machine are exibly connected 'at their upper ends to the rear ends of the arms 11, 1,1, and the lowerends of thejhangers 13,18 are 25 flexibly connectedto opposite sides of the scariier frame 19 which is pivoted at 38 to Vtheifront end `of the supporting frame |4. The `scariler teeth 8| are mounted on the cross-"piece 82 connecting the lower ends of the two arch shaped scarier 30 -arms 83, 83 which are arched upwardly and are .-bent outwardly f romithe side beams of the frame |4 so that the space between thearms 83, 33 will be ample for freedom of adjustment of the moldboard Adrawbar when the mold-board is tobe adjusted to steep bank-cutting position.V Counterbalancing springs 84, 84 are connected between the, rearwardly-extending arms 11, 11 and the lower portion of' the hangers 18, `,18 which are connected at" their' lcwer ends tothe scariiier 40 frame 19. Itshould be understood. that the Y- balancing springs .84, a4 facilitate 'suon adjustment as they act against the gravity of the scari-` The rear portion oftherod 88,A fasfshown in 5' A Fig.v 2, is journaled-in the bearing 85 for rotation relatively lthereto but' is restricted against longitudinal movement in either direction by the 'collars 88 and 31-on the rod 58. -The` journalbearing as is provided .withturuuions u; n 55 mounted for rotation on a horizontal axis in the spaced-apart bracket plates 89, 89 extending rearwardly from the tubular cross-bracel8 and connected at their rear ends to the cross-piece 98V which in turn tothe beams of` the 60 Vframe I4. It will thus be scen`that'wh'en the scarifier teeth 3| are doing work on the' roadway,

` the working thrust -will be transmittedjupwardly along the hangers 13 tending lto rotate the' shaft I 15 in .an anti-clockwise directonas 'viewed' in Fig. 1, thereby exerting a pull through the nut and screw elements .18 and on the rodi and its connections to thebeams of the frame 14.

The bracket'plates 39 are in a very eiiicent positionj-tu ensue advantage to be taken' of the 7 strength vof the tubular cross-piece I8 acting as. an abutment. and cooperating withthe cross piece 98 to effectively anchor the rod 83 and rve-A sist the worMng tlmist'during Athe operation of wthe scariiier.

- 95, is released -by a pull exerted 4onthe exibly- -connected links 95, 91', the-wheel 98 may be turned to effect rotation of the circle 92 relatively to the drawbar frame 94. The wheel 98 is connected by means of the rods 99, |00 and not only for road grading purposes but also for' the universal joints' IUI, |02 to the' rotatable gear I03,as shown inFig; 4. When the .circle carrying the mold-board or scraper blade is in ad y justed position relative to the drawbar frame 94,

the inten 95 may be reiisd'on io hold the moldboard in such adjusted relative position. As shown by the expanse of the arcuate rack |04 in Fig. 7, the adjustmentof the mold-board may be made'througha wide angle in either direction steep bank-cutting purposes.

By referring to' Figs. 6 and '1, placed end'to end,it will be seen that the drawbar frame 94 converges toward its front end so as to be relatively narrow at that portion where vit extends between the arms 83, 83 of thescarifler. The rear end of the drawbar 94 may therefore be shifted laterally Ias hereinafter described, and

the mold-board may'occupy a steep bankf-cut ting position :without causing-any interference between the rdrawbar frame 94 andthe arms 83 of the scari'er.;

The frontend ofthe drawbar frame'94is universally connected to the ring support |05 which screw-threaded tothe rotary'screw-threaded element |05. This universal connection between the front end of the drawbar frame 94 and the ring support |05 is eiIectedby means of the yoke- I01 which is pivoted to the ring support |05 on 5. 'I'lie rear end of the yoke |01 is provided with `a rearwardly extending rod |09 which is ;ou.r-

"' by the nut II| on therear naled in the bearing I0 and retained in position screw-threaded endV of the rodV |09.

When the mold-board is moved to steep banlrcutting position, the drawbar frame 94 must be -moved from the .position shown in Fig. 1 to that shown in Figs. l1o and i2. In order to sirord vample clearance between the drawbar frame 94.

and the main frame I4 for adjustment from road grading position'to steep-bank-cutting position, the f ront end of the drawbar frame is preferably movedto its lowermost position by A such rotation ofthe ssr'ew ihrendedeienient'm 1 as to vei'iect downward movement of the supporting -ring |05., The mechanism 'for lowering the -front end of the drawbar frame 94 vrelatively to the main frame I4 isshown-in 5 and 5*.

t0 the |l'.' Il.' of main frame-is a. cross-piece '|'|2, to the center of which is secured thev upwardly and downwardly pro-e jecting tubularsupports I'an'd'- II4. Tothe upper tubular. support I I is secured as by means or setscrsws Ils. Hsthetubuisr support lit' for' ine bearings of in snsitsyoi uis' bever e gears 49.

' welded to the upper end lof the rotary screwelf ment'l'll. Byineans of acrank |29, the worm 'I5 .Toine-lawn tubular supper-muis the casing ||1 for the worm"wheel ||l and the. worm |I9. The worm wheel Il liselectrlcally Ill be rotated to eilectrotatfon of the worm gear ||8 and the rotary screw element |05. and Asince the latter is threaded through the king post nut |05, the forward vend of the drawbar frame 94 may be lifted or lowered-by turning the crank izo, i It will also be seenby referring to Figs. 5 and 5B that the steering king post I2I is journaled on 'a vertical axis to the bolster |22. The king post '|2| is preferably a seamless tube to the lower end of which is screw-threaded a collar |23 to l0 serve asA an enlarged head-beneath the bolster |22. A screw I 24, as shown in Fig. 5a, is thread-V ed through the upper portion of the casing I and its inner'end-isprovided with a pin'which passes through registering openings in the tubu- I5.

.with the'tubular support II4 to hold vboth the casing ||`1 and the tubular king post I2| from turning relatively in theV iop frame piste nz. l0

Wherethe king post I 2| emerges from the top of the bolster |22 it is journaled in the bolster plate |25 which as shown in Fig. 5 is U-shaped with its upper ends welded to the beams I4', |4 The vertical shaft 49 is' journaled at its lower end portion in the insert or pilot bearing-IM' whichV is welded to the interior of the -lower end of the king post I2 I.

The upper end of the shaft 49 isjournaled in the bearing H6 which is secured tothe |I6.

Rotation of the shaft 49 to effect leaning of thejfront wheels riiaytherefore be effected independentlyof the mechanism forlowering the front end of the drawbar frame 94. When the 5 front wheels 'aremoved to adjustedleaning positions', they 'are locked in such positions by the wormgearing 5I, against any outward thrusts exerted laterally of the machine'by operation of the mold-board when in steep bank-cutting po..LI 40 sition. Furthermore, when the front end of the -drawbar has been adjusted to a lowered position, it will be locked there by the worm gearing H0,

||9 showninFig.5'\.`

The drawbar frame 94 comprises longltudinally extending angle irons 94', 94 which diverge fat their rear end portions for rigid connection to .are vertical'hangers |28, |29, the upper lends fof.

which are flexibly connected at |30, `I3| to the radial crank arms |32, |33 at the forward endsofthe longitudinal rock shafts |34, |35, as shown in Fig.- rl. The forward ends of the rock shafts es |94.l are iournaled in bearings |36, |31 which are mounted at the outer ends ofthe cross-piece |39 secured rigidly to the tops of the beams I4' of the mainframe I4.

'riie rear ends of vthe rocklsiiaiis' mand ist con 1 are journaled in bearings mounted on jpedestals 'such as illustrated at |99 in Fig. 10, suchpedestalsbeing' mounted on and secured rigidlyto the downwardly sloping -rearend portions of. they I4' The rear ends of the rock shafts |34, 55 |95 are connected to 4worin gearing in the casings |49, |4I shown inFig.4 '1, and to such worm gearing are connected the spaced-apart operating wheels |42, |43 located adjacent the operators platform, as shown in Fig. '1.' 7o Connected between brackets |44, |45, rigidly cams. |45, |41 on the rock shafts |94, |35, are

fcounterbalancingconnections, comprising the springsl, |49 shown in Figs. 'l and 10'. vThesel 75 bottoml of the bevel gear housing springs act against the weight of the drawbar frame and the parts mounted thereon, and therefore facilitate the operation of the wheels |42, |48 in adjusting the elevation and inclination of the mold-board.

Secured to the top of the casing |40, as shown in Figs. 4 and 7, is a bracket |50 for supporting a gear box containing gearing for connecting the crank |52 to the upper end of the vertical shaft |53. The latter is connected by means of a universal joint |54, the link |55, and the universal joint |56 to worm gearing |51 for rotating the spur gear |58 which meshes with the transverse rack bar |59 mounted on the rear axle |60.

'I'he worm gearing |51 is mounted in the casing which is rigidly secured to the rear ends of the beams I4 and therefore when the crank |52 is rotated, rotary motion will be transmitted through the link |55 and the worm. gearing |51 to the rack pinion |58. Rotation of the crank |52 will therefore cause the rack |59 to travel along the pinion |58, thereby shifting the rear end of the main frame relatively to the rear wheels. When the lateral adjustment of the rear end of the frame has been effected, the main frame will be locked in adjusted position relative .to the rear wheels by the worm gearing |51, andA consequently during operation of the mold-board While in steep bank-cutting position, the lateral working thrust on the main frame of the machine will not cause any movement of the main frame laterally relatively to the rear wheels.

The leaning of the rear wheels is effected by turning the crank I6 which is connected to gearing in a casing |62 supported on a bracket |50' mounted on top of the casing |4|, as shown in Fig. l2. Extending from the bottom of the casing |62 is a vertical shaft |63 which is connected by a universal joint |64 t0 the link |65 (Fig. 12)

The lower end of the link |65 is connected by means of the universal joint |66 to worm gearing in the casing |61, as shown in Figs. 4 and 12. The worm wheel shaft is secured to a pinion |68 which meshes with an arcuate rack |69, as

shown in Figs. 4 and 12. The arcuate rack |69 is secured to the angle iron cross-piece |10, the

ends of which are pivoted at 1|, |12 to the upper ends ofthe bell crank arms |13, |14, the lower ends of which are pivoted at |15, |16 to the ends of the rear axle frame |60. The horizontal arms of the bell cranks pivoted at |15 and |16 serve as the axles for the rear wheels I5, I5. When the mold-board is operating along the steep bank in almost upright position, as shown in the rear view of Fig. l2, it is desirable to lean the rear wheels as shown-by the dotted lines l5', I5 so that the rims will be able to dig into the road surface and effectively resist the lateral thrust on the rear end of the machine during the operation of the mold-board along a steep'bank.

'I'he rear wheels are. held locked in adjusted positions by the worm gearing 5| shown in Fig. 5. The worm-gearings |51 and |61 are similar to the worm gearing 5| shown in Fig. 5. Although the .worm gearing |51, 61 and 5| are each selfis welded a cylindrical sleeve |83 which is proa plurality of spaced-apart openings |89 through locking and `each individually operable, they all co-operate in resisting lateral thrusts on the ma.- chine during operation of the mold-board along a steep bank while having a high reach, as illustrated in Figs. and 12. 5

In road building operations it is often highly desirable to widen the roadway by using a moldboard in bank-sloping position. If the moldboard can bemoved only to a relatively small angle, the amount of material which must be cut 10 down and then hauled away is much greater than when the mold-board can be moved to a steeper position to eifect a given expansion in the Width of the roadway. By being able to move'the moldboard to an almost upright position, as shown in Figs. 10 and 12, a minimum amount of material need be cut down and hauled away for a given expansion in the width of the roadway. Where the nature of the ground operated upon is such that a steep sloping bank may be formed, it is preferred to use the machine at the greatest angle or steepest pitch as shown in Fig. l2, but it should be understood that the supporting and adjusting mechanism is capable of holding the mold-board at any of various angles between road grading position, such as that shown in Fig. '1, and the steep bank-cutting position, such as that shown in Fig. 12.

In order to secure adjustment of the moldboard through such a wide range of nearly 90, I have arranged the hangers so that one may be expanded to be relatively long and the other contracted so as to be relatively short, and mount them so as to connect the main frame with the drawbar frame in co-operation with the flexible 35 connections between the rear`end of the drawbar frame and the rear portion of 'the main frame.

A sectional viewof one of the hangers is shown in Fig. 11. As shown in Figs. 7 and 11, one of the upright hangers |28 is connected by the universal joint |30 to the crank arm |32 at the front vided with diametrically opposite openings registering with diametrically opposite openings in the tube |82.

The universal joint |21 which is located at the lower end of the extensible hanger |28 com- 55 prises a pin |84 locked to the ring |26 by means 0f the nut |85. A ball |86 ts in the spherical socket |81 which, is secured rigidly to the lower end of the rod |88. The latter is provided with which is adapted to project the headed pin |90, as shown in Fig. 11. By removing the cotter pin |9|, the pin |90 may be 'removed to free the rod |88 for sliding along the tube |82. In Fig. 11

the extensible hanger |28 is shown relatively 65y short, whereas .when it is extended to its full length it will appear as illustrated iv` Fig. '12. It is desirable to have the rod |88 t rather snlin the tube |82 so that it will cooperate therewith 'to-resist the bending of the hanger 70 even when it is extended to the length shown in Fig. 12. As hereinafter more fully explained, during operation of the mold-board there is a longitudinal thrust on the hanger |28 which it is desired to resist without bending, and bending is effectively resisted by having the rod 88 fit snugly into the tube |82. When the rod is in adjusted position in the tube |82, it is locked in such adjusted position by the pin |90 extending through one of the holes |89 and through the registered holes in the tube |82 and the ring |83. The pin |90 is kept from dropping out by the Cotter pin |9|.

As shown in Fig. 12, the hanger |29 also comprises an open ended tube |82', one end of which is connected by the universal joint |3| to the cranknarm |33. For the sake of cleamess, the

a rear view shown in Fig. 12 has assumed the rock shafts |34 and |35 as being horizontal and both ends at the same elevation, whereas in Fig. 10 the rock shafts |34, |35s1ope downwardly and vforwardly. In the'event that these rock shafts are` end vof the rod |88' is connected by the universal joint |21' to the drawbar frame 94. It should be understood that either rod |88 or |88 can project partially into itstube or entirely through the y same. The tube |82' is made relatively short so as to afford ample space for movement of the universal joint |21' to` the position shown in Fig.

12. The tube |82 is made relatively long so that I the universal joint |21 may occupy the vposition shown in Fig. 12 and so that the drawbar frame and the circle may occupy an almost upright.

plane, as shown in Figs. 10 and 12. When the parts are adjusted to the positions shown in Fig. A

12, the Working thrust laterally of the machine will beeffectively taken by the crank arm |33' on which a pull is exerted by the hanger |29, and the hanger |28 will resist an endwise` thrust in cooperation with the arm |32'; also -the tendency to bend the hanger |28 will be resisted by the projection of the rod |88 partially into the tube The flexible connections between the rear end of the drawbar frame 94 and the rear portion of the main frame |4 are adapted to` enable adjustment of the mold-board to extended lateral positions so as to position the rear end of the drawbar for effective movement to an almost upright plane without interference ofthe rnain frame ofthe machine.

To the rear ends of the diverging angle bars 94', 94-at |92, |92 is pivoted a semi-circle |93 for adjustmentrelative to the drawbar frame on anaxis which extends transversely of themachine when the mold-board is in road grading position. A cross-piece |94 rigidly connects the rear ends oi the semi-circle |93, as shown in Fig. 8. A supporting plate |95 is pivotally connected at |96 to the center Iof the cross-piece |94. To the underside of the supporting plate "|95 is secured a cylindrical socket |91 in which slidably fits the rod |98, the rearsend of which is connected by the universal joint |99 to the elongated rack bar '200 which is mountedl by means of spaced apart tongue and groove connections to slid transversely along the transverse inverted T-shaped support 20| which is rigidly secured to the under beams of the main frame |4,as shown in Fig. 1, and also in Figs. 4 and 10.

As shown in Fig. 8, the universal joint |99 may be connected either' through the bracket 202 or through the bracket 203 to the rack bar 200. When the joint |99 is connectedto the'bracket 202, as shown in Fig. 7, greater lateral shifting of the drawbar toward the rightA of the machine looking forward, may be obtained. whereas greater lateral shifting toward the left of the machine, looking forward, may b'e obtained when the universal joint |99 is connected to the bracket 203.

Releasable latch mechanism 204 is mounted on the radial supportil95 and comprises afspringpressed latch adapted to t into any one of the notches 205, 208 so as to secure a rigid connection between the rack bar 200 and the semi-circular. f

latch ring |93. As will be more fully hereinafter explained, the llatch mechanism 204 `may rigidly connect the radial support |95 to the semi-circular latch ring |93, whether the universal joint I 99 is connected to the bracket' 282 or to the bracket 203.

Meshing with the rack bar. 200 is a pinion 201,

'as shown in Figs. 4 and 9. -Worm gearing 208 is connected to theA pinion 201 to drive the same, Such worm gearing being mounted on the main framel |4 in theposition illustrated in dotted lines in Fig. 4. By turning the crank 203` from the oper- It will thus be seen that by rotating? the crank 209 shown in Fig. 4, the pinion 201 shown in Fig. 9 lmay be rotated on a fixed axis relative to the main frame |4 and thus transmit rectilinear movement to the rack bar 200 which is mounted to slide along the straight support secured to the bottom of the beams of the frame I4.

Various adjustments ofA the lateral position of the mold-board may be effected in cooperation with the hangers and the mechanism for operating the same. For instance, when the latch mechanism 204 locks the radial support |95 in the position shown in Fig. 8, the rack bar may be shifted toward the right, looking toward the front end of the machine. Then by releasing the latch mechanism 204, the rack bar may be returned while the support |95 freely pivots at |96, without to a more extended lateral position relative to the mainframe. In a similar manner, by consol necti-ng the universal joint |99 to the bracket 203 and using th'e latch mechanism in co-operation with the notch 205 and later with the notch 206, the rear end of the drawbar may be shifted to an extended lateral position at the other side of the' machine. It should also be observed by. referring to Fig. 10 that when the mold-board is in steepbank-cutting position, the latch mechanism is associated with one of the 'notches 205 so that the support for the mold-,board and the circle, formed by the drawbar and its connections to the main l frame, will be upwardly arched. When the moldboard is on the other side of the machine in a steep bank-cutting position, the latch mechanism will be associated with one of the notches 206 for a similar reason. It should be particularly noted that the worm gearing 208 shown in Fig. 9, is self-locking and therefore serves to effectively resist any tendency of the working thrust of the mold-board when in steep bank-cutting position to move the rack bar 200 transversely of the machine.

When it is desired to use the mold-board on the other side of the machine from that shown in Fig. I2, the hangers |28 and |29 may be interchanged and the rear end of the main frame shifted laterally to the other end of the rear axle frame. The hangers |28 and |29 are removable from the machine in a manner indicated in Fig; 11. is to say, by removing the cap halves of the'sockets |21 and |30. This may be done by loosening the nuts 22|, 222 and removing thev 'cap-fbolts'y 223, 224. The balls |88 and l|19 may'bef-left permanently connected to 20 the drawbar part "2H and toV the crank arms |32 as shown in Fig'. 11. Releasable pin and hole connections between thefrodsl |88, |88' and the tubes |82, |82 are in the nature of releasable latch devices for permitting -l expansion vor con- 26 traction o'f each of thehangersY by operation of the rock shafts |34, in accordance with the desired. position ofthe mold-board.

Theadjustment of the mold-board from roadgrading position to the upright blank sloping vposition may best be understood by referring to Fig. 12 and considering the: adjustments in effecting movement of the mold-board back from steep bank-cutting position to road grading position., If the rock shaft |84 moves the crank arm |32 in a clockwise direction, the lower end of the mold-board will be swung inwardly or toward the left, as viewed in Fig. 12, and the drawbar will rotateon its connections between the forward end and the rear end thereof with the main frame, but at such time the pivot at |3| is fixed and therefore the pivot |21' can move only through an are on.a radius equal to the effective length ol.' the hanger |28. The two hangers |28 and |29 therefore co-operate with the connections between the ends of the drawbar frame and the main frame to rigidly hold the drawbar in a bank-sloping position but not -at such -a steep angle as that shownin Fig. 12. While the hanger |28 remains at its adjusted length shown in Fig. 12, the crank arm |32' is 4eiilective through only an angle of nearly 180 to move the lower endof the mold-board toward the left. The upper end of the moldboard, however, may be lowered by moving the crank'arm |38' in a clockwise direction. as viewedin Fig. 12. While the crank arm |32' is diametrically opposite its position shown in Fig. 12, the hanger |28 is flexibly connected at its ends to the, arm |32' and the drawbar frame. However, when the arm |33' is moved in a clockwise direction as viewed in Fig. 12, the movement of the mold-board depends upon the position of` the connections between the rear end of the drawbar and the rear portion of the mainframe. Movement of the arm |32' through approximately 180 in a clockwise direction, as viewed in Fig. 12, will move the universal joint |21 to a hlgher'elevation so as to afford ample clearance for the lower end of the mold-board to moveunder the machine. Movement of the arm |33 in a clockwise direction may continue to nearly 270 and be continually effective in"- l lowering the'upper end of the mold-board)and eiectinglmovement of the lower end of the mold- 75 board transversely of the machine toward 'the .It canreadily be seen byvfollowing the aforesaid left as viewed in Fig. 12. In fact, the lowering of the upper end of the mold-board will be equal to the length of the arm |33 plus the distance between the universal joint |3| and the universal joint |21'. It will thus be seen that the hangers |28 and |29 may be locked in such extended positions that without making further adjustments, the mold-board may be moved from a position under the machine to a steep bankcutting position beyond one side of the machine by rocking the shafts |34, |35. Consequently, the operator while on the platform 20 may adjust the mold-board to `various bank-sloping angles.- or from low pitches to very high pitches.

movements from the steep bank-cutting DOsitionshown in Fig. 12 to the. position of vthe moldboard under the machine, that when in the latter position the machine may bereadilytransported. However, further adjustments. in the extensions of the hangers may be made vfor `road grading purposes. AIt can readily be seen that when the mold-board is under the machine, the arm |32' may-be .moved in an anti-clockwise direction and thus let the'mold-board contact\with `25 the roadway. whereupon the hanger |28, after releasing the pin |90, may be adjusted toa desired length for road grading purposes andthe pin |90 re-inserted. In a' similarmanner the hanger |29 may be adjusted in length by in- 30 serting a prop under the mold-board-at that side of the machine, releasing the pin |90 and operating the crank arm |33'. Inasmuch as the rod |80` extends through both ends of the tube |82' the effective length of the hanger |29 may be made .much longer than when it is adjusted to the length shown in Fig. 12. It can readily be seen by comparing Figs. 11 and 12 that the the hanger |28 may have its effective length 'shortened and the hanger |29 may haveits 40 effective length extended so that when the moldboard is in road grading position, both hangers are approximately the same length -when the crank arms |32' and |33' extend radially from the rock shafts |34 and I 35 in symmetrical relation to each other.

When the mold-board is in the steep bank-cutting positionshown in Fig. 10. adjustments of .the positions of the ends of the mold-board may be made by the circleoperating gearing |33, |34 50 shown in Fig. 4. The mold-board may therefore be adjusted to the height of the bankto be cut'. and when the mold-board is to be moved back to a position under the machine, its lower end may by the circle operating mechanism be moved up off the ground so as to afford ample clearance. It should also be particularly noted that when the hangers |28 and |28 have been once adjusted to be respectively long and short. as shown in Flg.

12, a very wide range ofV bank-cutting positions f of the mold-board may be effected by rocking of the shafts |34 and; |38 without further adjustments of the lengths of the hangers |28 and |23. But whenever desired, either h anger may be readily adjusted in length while the mold-board is 05 extraneously supported and only the shafts |34 and |35 actuated. x' /f In view of the foregoing erplanatip it will become* evident what adjustments can be .made to change the mold-board from. road-grading position such as that shown in Fig. 1 to elevated position in readiness for bank sloping operations. When in road-grading position the rockshafts |34 and |38 may be operated to lift the moldlboard vertically and rectilinearly to transportaaiutano "i tion position. while in `auch elevated transportation position the mold-board may be supportedby props placed under the end portions thereof and.

` removed.

The mold-board is now still in transportation position but it should be particularly noted that withoutfurther adjustment o: the lengths of thef' i' hangers the mold-boad-may b e adjusted to various slo in bank-cut tions inclu .the

p g uns mi ding of trees, for tnerearlend of the drawbar to be nearly upright position shown in Fig. 12. Y

After the'sustaining props are removed, the

rear end of the drawbar frame may be to its 'maximum extent to one side of thermachine, where the adjusting mechanism is 'locked by the worm gearing 208 (Fig, 9). Then .all the operator is required to do to adjust the pitch or slope 'of the mold-board, is to rotate the two wheels |42 and |43, with the assurance that wher'- ever the mold-board is located it will be locked in adjusted position by the worm gearing |40, |4|.

It should also be noted that the machine ailords a limited latitude of. adjustment of the distance between the upright cutting plane of travel of the cutting edge oi' the mold-board and the path of travel of the adjacent wheels. This distance will depend upon the height to which the mold-board is propped when horizontal and above the road surface, or it will depend upon the adjustment of the lengths of the hangers before the props are removed. However, such distance may also be varied whendesired by. changing the lengths or the hangers while the mold-board is extraneously supported in bank-sloping position.

'I'hel lateral working thrust on the machine tending to skid the same sidewise away from the sloping bank will be greatest when the mold-board is in the almost upright position shown in Fig. 12, but this lateral working thrust is eilectually resisted andcounteracted by the leaning of' the front and rear wheels in such direction asto cause i the edges of the rims remote from the sloping bank to dig into the road surface. During such steep bank-cutting operations the steering mechanism shown in Fig. 6 is locked by the worm gearing 35 (Fig. 6), the front wheel leaning mechanism is locked by the worm gearing (Fig. 5), the rear wheel leaning mechanism is locked by the worm gearing v'|61 (Fig. 12), the laterally shifting mechanism for the rear end of the main frame is locked by the worm gearing |51 (Figs. 'I and 12), the laterally shifting mechanism for the rear end of the drawbar frame is locked by theA worm gearing 208 (Fig. 9) and the latch mechanism shown in Fig. 8, and the iront end of the drawbar frame is locked by the worm geargrooves Vat diametrically opposite ends of the ing ne, Ils (Figari and 5). During operation o`fthe mold-board in highlift position for operation on a steep bank, the

` scarier may be up oir the road surface as shown in Fig. 10, where vit will be locked by the nut and screw elements 69, 10 shown in Fig. 2. The space between the arms 82, 83 is ample to permit any desired adjustment of the drawbar frame at any time. While usually the scarier is in operation only when. the mold-board'isinroad-grading position, it may be adjusted to operative position/Jay.v

the mechanism shown in Fig.- 2 for operating during-bank slopin'g operation by the mold-board.

It desired, the scarier 19.may be omitted, as shown in. Figs. 3 and 4 placedl end to end, but if included in the machin/@thel portions of the arms 83 extending downwardly from the beams I4', I4'

j should be bent outwardly suiiiciently to provide When the machine is operated along a steep vbank with the mold-board in an almost upright plane'. as shown in Fig.: l0, there is a tendency when the mold-boardfis dislodging rocks or roots lifted from its adjusted position, but such tendency -is eil'ectually resisted 'bytheconnectionsbetween the mainframe and the front and 'rear ends'oi thedrawbarjrame.

^ As shown in Figs. 8-and;l0,`it is .preferred to supply two notches 205 and-'two notches 209. If

the. work fogthe mold-board' is unusually dimcult at a steepbank, the'jlatch 204 should be shifted to the upper notch; 2u5,' as viewed in Fig. 1o, and the circle adjusted-accordinglyto provide lproper clearance'for-thflwer end o f the moldboard. -By atteningfthe upwardly extending arched support.. for-:the circle and mold-board,

-.the tendency will be less --toward pulling the socket |91 oi the rod |99'.,- Itfmay also occur in practice that the natureof the material in the steep bank is such that the mold-board when in the position shown in Fig. l2, willhave a tendency to be deflected from obstructions such as rocks or tree roots, farther into the bank in a direction away from the roadway. To counteract this tendency, the wheels may be leaned in directions opposite to that shown in dotted lines at l5' in Fig. 12 to prevent skidding of the machine as a whole toward the bank.

It will also be seen byreferring to Fig. 'Ithat the circular angle iron |26 is rigidly welded by means o f the cross-piece 2|6 and the vertical radial plates 2H, 2|1, to the angle bars 94', 94"

lthe outer ends of the latter. each in position toy wipe. the periphery of the horizontal iiange of the ring |26. Welded to the inner face. of the circle BZ-and tothe guide plates 2| 9 is an arcuate .latch plate 220 in position to extend over the 'tops of the arcuate guide plates 219 and overlap the vupper 'surfacefoi the horizozntal ilange of the ring |26, asv shown in Fig. 7. Thus guide arcuateplate 220 overlaps the upper 'side of the v ange of the ring |26, as clearly shown in Fig. '1.

Consequently the mold-board cannotbe pulled away from the drawbarf'frame when steep bankcutting operations 'are being performed. The interlocking connections at 2 I9', 2|9 between the circle. 92 and the ring |26 co-operate with the king-bolt 93 and the latch mechanism 95' to hold the circle and the mold-board in their adjusted positions and prevent them from being pulled away from any portions of their supports attached to the angle iron A94' of the drawbar frame. It will therefore be evident that 'when the mold-board is adjusted for operation along a steep bank, as illustrated in Figs. `10 and 12, it will be held rigidly connected to the main frame Il of the machine against movement relative thereto in any direction. 1 c

In the accompanying drawings where links, such as those designated 33,- 34, |06, |55, |65, are "shown in sections of different diameters, it should be -understood that these links'are exte`nsible,-one section being a rod square in `cross-section, and

-the other section being tubularor having a complementary socket so that wheny rotary motion is .given to the socket section, it will be transmitted kto, .the rod section within the limits of adjusthereto appended, and I therefore wish not to be restricted to the precise construction herein disfor adjusting the elevation of said mold-board and its inclination relative to the vertical, a support pivotally connected to the rear end of. said drawbar on a transverse axis, a rearwardexten'- sion from said support in lateral angular relation to'the drawbar, and laterally shifting mechanism mounted on vsaid frame and comprising' spaced-apart brackets either of which is adapted to be selectively connected to the rear end of said angular extension.

2. In a road grade the combination with a vehicle frame, of a drawbar universally pivoted at itsvforward end to said frame, a mold-board adjustably carried by said drawbar, means com-'- prising extensible hangers at the sides of said 4frame for adjusting the elevation of said moldboard and its inclination relative to the vertical,

one hanger comprising a rod extending through a relatively short tube and the other hanger comprising a rod extending into a relatively long tube, the universal pivot at the forward end of said" drawbar permitting said drawbar to be moved relatively to said frame to an almost vertical plane to 'support the mold-board for operation ona nearly vertical bank spaced laterally from the path of travel of the vehicle, and means extending rearwardly from said drawbar to said frame for holding the drawbar at an adjusted angle relative to the line :of draft and tocooperate with the drawbar toaiford an upwardly extendin arched support for the mold-board when adjusted to such upright bank cutting posiltion.

3.v In a road-grading machine, the combination with a supporting frame, of a road working aiozaoo implement adjustably mounted on said frame,

means comprising an extensible thrust rod comprising enclosed nut and screw elements connected to said road working implement to adjust the same relative to said frame, a tubular crossbrace on said frame, an elevated cross-support rearwardly of said tubular cross-brace, longitudinal bracing plates connecting said tubular cross-brace to said cross-support, a thrust bearing for said rod, and trunnions between said bearing and said plates for vertical oscillation of said bearing between said plates.

4. In a road-grading mach-ine, the combination 'with a main frame, of a `drawbar frame, 'a Amold-board, a circle for supportingthe mold- CII board, 'a circular angle iron track secured tosaid drawbarN frame, mechanism comprising a. king pin for pivotally connecting the circle tov said drawbar frame concentric with said' circular track, interlocking guiding mechanism between said circle -and said circular track at diametrically opposite sides ofsaid circle,4 mechanism for supporting saidcircle and said mold-board for oper- `'ation of the latter'on an almost upright bank at one side of the path of travel of the machine, and meansv for' preventing laterally skidding of `the machine when operating along such steep bank.

5. In a road-workingmachine,the combination with a main frame, of a drawbar frame, a. moldboard carried by said drawbar frame, a rack-bar,

a support mounted on said main frame for th'e sliding of said rack-bar laterally of said main frame, Va semi-circular latch member` having spaced-apart notches and pivotally connected to the rear end of said drawbar frame, a plate pivoted to said latch member concentric with the rear periphery thereof, a releasable latch carried by said plate and adapted to engage any one of said notches in said latch member, a socket carried by said plate, a rod slidable into said socket, a universal joint between the rear end of said rod and said rack bar, and means comprising selflocking worm gearing for shifting said rack bar laterally tov eiect lateral shifting of the rea-r end of the drawbar frame. c A

6. In a road grader, the combination with a vehicle comprising a supporting frame, of a supplemental frame, a mold-board carried by said supplemental frame, a universal connection between the forward end of said supplemental frame and sai'd supporting frame to permit movement of said supplemental frame to a -position where the mold-board cutting edge will' occupy an upright plane, adjustable connections between the vrear end of said supplemental frame and saidI supporting frame to secure-an upwardly arched support for the mold-board when its cutting edge is in such upright plane, and mechanism comprising extensible hangers one comprising a rod extenda ing through a relatively short tube and the other comprising a rodextending into a relatively long tube, said hangers being between the supporting frameand said supplemental frame and adapted to co-operate with the connections between saidsupplemental frame and saidsupporting 'frame to support the mold-board in position for operation along an chine.

'7. In a bank-sloping machine, the combination with a vehicle comprising a supporting frame, a mold-board,a drawbar for carrying said'moldboard, a pivotal connection between the forward `end of said drawbar andsaid supporting frame, laterally shiftable mechanism on said supporting frame rearwardly of the rear end of said drawupright bank at one side of the mamonaco bar, adjustable connections between the rear endl of said drawbar and -said -laterally shiftable mechanism to secure an upwardly arched support for' the mold-board when the latter is at- 'cooperate with said laterally shiftable mechanism and the adjustable connections between the same and the rear end of said drawbar to effect adjustment of the mold-board from a position under said frameto a steep bank-cutting position spaced i laterally from either side of said supporting frame.

8, In a bank-cutting machine, the combination with a vehicle comprising a supporting frame,

11. A road-working machine comprisingfthe combination with a vehicle comprising'a frame, of a mold-board, a drawbar for carrying said mold-board, a pivotal connection between their iront end of said drawbar and said frame, mechanism between said -frame and the rear end of said drawbar for eecting shifting of the mold- .'board laterally of said frame, means comprising operated self-locking means for operating said extensible hangers adapted to co-operate with said shifting mechanism to effect adjustment of said road-working implement to a steep bank-cutting position at on'e .side of said frame, manually operated vself-locking actuating mechanisms respectively connected to said hangers, manually shifting mechanism, -and'self-lock'ing mechanism for adjusting the elevation ofthe said pivotal connection between the front end of said drawbar j'and said frame so that when the pivot at the iront end of the drawbar is lowered ample clearof a mold-board, a supplemental frame for carry-' ing said mold-board, a pivotal connectionbetween one end of said supplemental 'frame and said supporting frame, laterally shiftable mechanism on said supporting frame spaced from the other end of said, supplemental frame, adjustable connections between such laterally shiftable mechanismf and the adjacentend of said supplemental frame adapted to co-operate with said supplemental frame to secure an upwardly arched support for the mold-board when the latter is in steep' bankcutting position, and mechanism comprising spaced-apart hangers one having arod extending through a relatively short tube and the other having a rod extending through a. relatively long ends of said drawbar serving as the sole support ance under the frame will be afforded for movement of the drawbar and the mold-board to steep bank-cutting position, said extensible hangers and theconneotions between said trame and the for the drawbar andthe mold-board when the tube for co-operating with said upwardly arched support to move the mold-board to various steep bank-cutting positions with the cutting edge oi the mold-board entirely beyondthe path of travel of the vehicle,

9. In a road grader, the combination with a an extensible connection between the rear end of latter is in its steep bank-cutting position.

- 12. A road working machine comprising the combination with a wheel-supported frame, of a drawbar pivotally connected at its `forward end 'to said frame, a mold-board adjustably .carried by said drawbar, means forlifting the rear end' of said drawbar on its pivotal connection with said frame, a `laterally shifting device on said frame,

said drawbar and said laterally shifting device,

- and means comprising releasable spring-pressed vehicle comprisinga supporting frame, of a roadworking implement, a drawbarfor carrying said implement, a pivotal connection between the,

frontend-of said drawbar and said frame, means for adjusting the elevation oi' said pivotal connecimplement adjustably mounted on said frame.A

tion relative to said frame, a laterally shiftable bracing structure extending longitudinally of said* frame between the rear end of said drawbarand said frame.' said bracing structure being flexible as to adjustability, and means'comprising spacedapart hangers between said frame and said drawbar to co-operate with the connections between the ends of said drawbar and said frame to adjust the road-working implement to bank-sloping pomtion at one side of said traine, the lowering of the pivotal'connectionaiording ample freedom of movement of said drawbar relativelyto said trame and said bracing structure co-actingwith said hangers and said pivotal connectiondurlng operation. of the implement to holdthe latter toitsvoi'k. Y 'vl 10. In a road gradentie combination with a wheel-supported frame; o a drawbar pivotally ,connected at its forward end 'to sama-ame, a

mold-board adjustably carried by. said drawbar,

means for lifting therearend oi' said drawbar on, its pivotal connection with `said frame, an extensible connection between the 'rear end of said drawbar and said frame, and means comprising` releasabl'e latch mechanism lassociated with a latch memberhaving a plurality of notches on eachside of the centerthereof for locking said extensible connection at an tive to-said drawbar.

adjusted angle rela-- latch mechanism associated with a latch member having a plurality'of notches for locking said extensible connection at an adjusted angle relativeto said drawbar. i y 1 3. In a road grading machine, the combination with a supporting frame,4 of a road-working means comprising extensible telescopic -translating mechanism connected to said road working implement to adjust'the same relative to said frame, a tubular cross-brace on said frame, across support spaced rearwardly from said-tubular cross-brace and secured to said frame, reinforcv ing structure between said cross support and said tubularcross-brace, trunnions ymounted on said in position to t said tru-unions.

cross support and connected to said reinforcing structure, and bearings extending laterally from said extensible telescopic translating 14. A hanger forroad building machines,co

AI'rrising. in "combination, an elongated tube open A at both end s, a rod having a slidable guidingflt in said tube to provide an elongated slide bearing, a

transverse pin extendingthrough said tube and ".15.'In"-a"road `building machine, the combinaone of a series 'of holes in said rod for holdingthe latter in adjusted relation to said tube including a. position lof the rod extending ,entirely through. said tube, a ball and socketjoint connected vto said tube, i anl additional ball and socket joint con- -nected to said rod, and means for .detachably connecting said ball and socket joints to' spaced-l apart elements of a road-building machine.

tion withA a-wheel-supported frame.' of a roadworking implement, and means for adjustablysupporting said road working implement relative v to said frame comprising j'an open'-ended tube having a -rod ntted therein and slidable there- 75 through to project beyond both ends thereof, and flexible connections to the tube and to the rod.

16. In a bank-sloping machine, the combination with a wheeled supporting frame, of a drawbar frame, a road-Working implement carried by said drawbar frame, and means for adjusting the road-working implement to steep bank-cutting position comprising spaced-apart hangers the4 upper relatively short in its effective length and the lower relatively long when the road-working implement is in steep bank-cutting position, the upper hanger having a rod extending through a relatively short tube and the lower hanger having a rod extending into a relatively long tube.

1'7. A road working machine comprising the combination with a main frame, of a drawbar frame, a road working implement carried by said drawbar frame, a semi-circular latch 'member having spaced-apart notches and pivotally connected to the rear end of said drawbar frame, a Support pivoted to said latch member concentric with the rear periphery thereof, a releasable latch carried by said support and adapted to engage any one of said notches in said latch member, a socket carried by said support, a rod slidable into said socket, a laterally shifting device carried by said main frame, and a unversaljoint between the rear end of said rod and said laterally shifting device.

18. A road working machine comprising the,v

the rear end of said drawbar frame, a support pivoted .to said latch member concentric with the rear periphery thereof, a releasable latch carried by said support and adapted to engage any one of said notches in said latch member, a socket carried by said support, a rod slidable into said rod to either of said brackets.

19. In a road building machine, the combination with a vehicle comprising a supporting frame, of a drawbar connected at its ends to the front and rear portions of said frame, a moldboard carried by said drawbar, spaced-apart hangers one comprising a rodv connected to said drawbar and slidable through a relatively short tube and the other comprising a rod connected to said drawbar and slidable into a relatively long tube, mechanism supporting said hangers in position to co-operate with the end connections between said drawbar and said frame to support the mold-board in steep bank-cutting position at one sideof the machine with the hanger having a short tube in elevated position and with thehanger having the long tube extending diagonally downward from that side of the machine remote from the mold-board, and means for actuating said. hangers to adjust the mold-board to such steep4 bank-cutting position.

20. In a road working machine, the 'combination with a main frame, of a supplemental frame, v

said laterally shifting mechanism, and spacedapart attaching devices on said laterally shifting mechanism either of which is adapted to have iiexibly connected thereto the rear end of said extensible connection.

21. In a road working machine, the combination with a main frame, of a drawbar frame flexibly connected at one end to said main frame,

laterally shifting mechanism spaced longitudi. nally of the machine from the other or free end of the drawbar, an extensible connection extend- ,ing from the free end of the drawbar longitudinally of the machine toward said laterally shifting mechanism, and spaced-apart attaching devices on the laterally shifting mechanism either of which is adapted to have connected thereto the rear end of said extensible connection.

22. In a road working machine, the combination with a main frame, of a drawbar flexibly connected at its forward end to said main frame, extensible hangers between said main frame and said drawbar, a rack bar on said main frame, spaced-apart attaching devices on the rack bar and movable therewith respectively to opposite sides of the machine, and an extensible connection extending rearwardly from the rear end 0f said drawbar longitudinally of the machine to either of said attaching devices, said extensible connection comprisingl a link structure exible on a horizontal transverse axis in responseto operation of said hangers when the drawbar is under said main framebut rigid against lateral movement when ,connected to said rack bar.

23. AI road working machine comprising a road working implement, -a frame for carrying the same, laterally shifting mechanism including an elongated member mounted for movement transversely o! the machine. spaced attaching devices on said elongated member, and a connecting structure extending rearwardly from said frame longitudinally of the machine to either of said attaching devices, said structure being exible for movement of the said frame in elevation when the road working implement is adjacent the road surface under the machine, but said structure being rigid against iiexure laterally when said elongated member is moved transversely of the machine while attached by means of one ci' said attaching devices to the rear end of the said connecting structure.

. 24. In a road grading machine, the combination with a supporting frame, of a drawbar, a mold-board carried by said drawbar, a exible connection between the forward end of said drawbar and said frame, rearward extending connections between the rear end of said drawbar and said supportingA frame rigid against flexure laterally relative to said drawbar but iiexible for variation in elevation of the rear end of the drawbarwhen the mold-board is under said frame, mechanismA comprising hangers connected to said drawbar to vary the elevation and transverse inclination of said mold-board as permitted by the aforesaid iiexibility of said rearward extending connections, and shifting mechanism on said supporting frame and comprising spaced-apart attaching means to the rear end of said connections to shift the mold-board laterally while said connections'are rigid against lateral flexure as vextending rigid support for the rear end of the CFI drawbar on the supporting frame when the moldboard is operating in bank-sloping position.

25. A road grading machine comprising the combination with a supporting frame, of a drawbar connected at its forward end to said supporting frame, a mold-board carried by said drawbar, connections extending rearwardly from the rear end of said drawbar longitudinally thereof and rigid against flexure laterally relative to said drawbar but iiexible for variation in elevation of the rear end of the drawbar when the mold-board is under said supporting frame, mechanism comprising extensible hangers adjustable as to length and connected to said drawbar to vary the elevation and transverse inclination of said mold-board as permitted by theaforesaid ilexure of said connections, and shifting mechanism on said supporting frame comprising a transversely movable member having spaced-apart attaching means to the rear ends of said connections to shift the mold-board laterally while said `connections are rigid against lateral fiexure as aforesaid, said laterally shifting mechanism being adapted to cooperate with said extensible hangers -and the elevating mechanism connected thereto to move the mold-board to steep bank-sloping position at one side of said machine where said rigidity of said connections strengthens the support of the moldboard when operating in bank-sloping position,

26. A road working machine comprising the combination with a vehicle frame, of a moldboard, a drawbar for carrying said mold-board, a pivotal connection between the front end of saiddrawbar and said frame, mechanism extending rearwardly from said drawbar and longitudinally thereof to said vehicle frame for effecting shifting of the mold-board laterally of the said frame, means comprising extensible-hangers adapted to co-operate with said shifting mechanism to effect adjustment of said mold-board to a steep bankcutting position at one side of said frame with the greater portion of the mold-board extending lati erally beyond the path of tiavel of the vehicle,

and mechanism independent of said extensible i hangers for adjusting the elevation of the front end of the drawbar to afford ample clearance for movement of the .drawbar from under said frame to bank-sloping position.

extensible hangers adapted to co-operate with said shifting mechanism to effect adjustment of said mold-board to a steep bank-cutting position at one side of said frame, and mechanism independent of said extensible hangers for adjusting the elevation of the front end of said 'drawbar along said upright axis to enable said drawbar to have ample clearance under the frame for .novement of the mold-board from under said frame to said steep bank-cutting position.

28. A road working machine comprising the combination with a vehicle frame, of a moldboard, a drawbar for carrying said mold-board, asteering unit pivotally connected to the front end of said frame on a vertical axis, connections between the front end of said drawbar and said frame o n rectangularly related axes one of which coincides with said upright axis, mechanism between said frame and the rear end of saiddrawbar for effecting shifting of the mold-board laterally of the said frame, means comprising extensible hangers adapted to co-voperate with said shifting mechanism to lefiect adjustment of ksaid l mold-board to a steep bank-cuttingposition at one side of said frame, and mechanism independent of said extensible hangers for adjusting theelevation of the front end of said drawbar along said upright axis to afford ample clearance for movement-of the drawbar from under. said frame to one side of said frame for said steep bank-cutting position of the mold-board.

29. A road machine comprising a main frame; a tool positionable beneath said main frame; spaced connections between said main frame and said tool including lift links adjustable as to length; and mechanism co`operable with said lift links for positioning and maintaining said tool at an angle to one side of said main frame comprising an extensible link connected with said tool, and a second member mounted for shifting movement on said main frame transversely thereof and having a plurality of fastening stations thereon to any selected one of which said extensible link is adapted for connection, one of nection for said link beyond one side of said main frame, 'and the other fastening station serving as a point of connection for said link beyond the other side of said'main frame, and means for shifting said second member laterally relatively tothe main frame to eiect movement of said fastening stations beyond the sides of the main frame and thereby through said link connection to said drawbar shift the said tool into position to project well beyond the sides of the main frame.

30. A road machine comprising a vehicle frame; a supplemental frame connected thereto; a grader blade mounted' on said supplemental frame; spaced connections between said main frame and said supplemental frame including spaced arms each mounted on said vehicle frame for rotation about a longitudinal axis, and lift links each adjustable as to length'and pivotally connected both to said arms and to said supple-v mental frame; and mechanism co-operating with said lift links for pitioning and maintaining said supplemental frame with the graderblade thereon at a high angle to one side of said vehicle frame comprising an extensible link connected to said supplemental frame, and a second member .mounted for shifting movement on said vehicle frame transversely thereof .and adapted to be shifted to positions projecting beyond the sides of said vehicle frame, said second member having a plurality of fastening stations thereon to any selected one of which said extensible link is adapted for connection, either of said fastening.

stations serving as a point of connection for said extensible link for normal working operation of said grader blade beneath said vehicle frame, and

' one of said fastening stations serving as a point vehicle frame; a tool supporting frame position-v able beneath said vehicle frame; a draft connecsaid fastening stations serving as a point of contion for said tool supporting frame having a connection with said vehicle frame;v spaced connecsupporting frame including lift links each adjustable as to length; each of said lift links comprising a tubular member, a second member telescoping within said tubular member, one of said members having apertures spaced along the length thereof and the other of said members having an aperture adapted to be alined with a selected one of said spaced apertures, and a securing member adapted to be inserted through any selected alined apertures in said members; and mechanism constructed to be rigid against lateral exing independently of said lift links and cooperable with the latter for positioning and maintaining said tool supporting frame at a high angle at one side of the vehicle frame, said means 'rigid against lateral flexing comprising lateral shift mechanism between said tool supporting frame and said vehicle frame including a substantially rigid member mounted for transverse movement on said vehicle frame and having spaced fastening stations thereon, and extensible link structure connecting said tool supporting frame to a selected one of said fastening stations, said extensible link structure extending rearwardly from said tool supporting frame to said vehicle frame and being rigid aganst lateral flexing to enable movement of said rigid member transversely of the vehicle frame to impart lateral movement to said tool'supporting frame, such rigidity against lateral exing also enabling said extensible link structure to support the tool supporting frame in steep bank sloping position on the vehicle frame rearwardly of the tool supporting frame in co-operation with said extensible hangers.`

32. A road machine comprising a vehicle frame; a tool supporting frame positionable beneath said vehicle frame and having a draft connection with the latter; spaced connections between said vehicle frame and said tool supporting frame including lift links each adjustablev as to length; and means constructed to be substantially rigid against lateral iiexing independenuy of the uit 1inks and .eo-operable with the' latter for positioning and maintaining the tool supporting frame at a high angle at one side of the main frame, said means 'comprising lateral shift mechanism between said tool supporting frame and said Vehicle frame, said laterally shifting mechanism including ,a substantially rigid member mounted for transverse movement on said main frame rearwardly of the said tool supporting frame and having spaced fastening stations thereon, and link structure connecting a selected one of said fastening stations to said tool supporting frame, said link structure being rigid against lateral flexing to enable transverse movement of said rigid member to shift laterally the rear end of the tool supporting frame.

33. A road machine comprising a vehicle frame; a tool supporting frame positionable beneath said vehicle frame and having a draft connection with said vehicle frame; spaced connections between said-tool supporting frame and said vehicle frame including lift links each adjustable as to length; and means constructed to-be substantially rigidv against lateral flexing and co-operable with said lift links for positioning and maintaining said tool supDQrting frame at a high angle at one side of said vehicle. frame, said means being additional to the lift links and in itself without said lift links rigid against lateral flexing because comprising lateral shift mechanism between said tool supporting frameand said vehicle frame including a substantially rigid rack bar mounted for transverse movement on said vehicle frame and having a fastening station adjacent each end thereof adapted upon movement of the rack'bar to be projected beyond the associated side of said vehicle frame, and link structure extending 'rearwardly from said tool supporting frame to a selected one of said fastening stations, said link structure comprising telescopically connected members to render said link structure extensible, one of said members beingconnected to one of said fastening stations, said link structure not including a rigid link member because of the telescopic extension as aforesaid but said link structure being nevertheless rigid against lateral flexing to enable lateral movement of the ra ck bar to impart lateral movement to the tool supporting frame; and means for actuating said rack bar comprising a pinion meshing with the rack thereon vto effect lateral shift of the said link structure and said tool supporting frame, the co-operation of the extensible lift link as aforesaid being to effect movement of the tool supporting frame to steep bank cutting position at one side of the frame where said rearwardly vextending link structure now resisting downward iiexing aids in the support of the tool supporting frame on said vehicle frame.

FRANKLIN E. ARNDT. 

